close
    1. Home
      2. ›
    2. Home & Garden
      3. ›
    3. Decorating & Remodeling
      4. ›
    4. how many 2 x 12's lamanated for a beam to span 21 ft.
    how many 2 x 12's lamanated for a beam to span 21 ft.

    Answer this
    0  Views: 916 Answers: 1 Posted: 13 years ago
    Comment this question

      1 Answer

      Four, they must be staggered of coarse, you must also sandwich 1/2 inch plywood in between each 2x12. Glued and screwed. Two Carriage bolts equaly spaced on three foot centers.

      13 years ago. Rating: 3
      Comment this answer



        Did this answer your question? If not, then ask a new question.

        Top contributors in Decorating & Remodeling category

         
        ROMOS
        Answers: 58 / Questions: 0
        Karma: 3940
         
        country bumpkin
        Answers: 49 / Questions: 0
        Karma: 3425
         
        jhharlan
        Answers: 27 / Questions: 0
        Karma: 1965
         
        Colleen
        Answers: 69 / Questions: 0
        Karma: 1835
        > Top contributors chart

        Unanswered Questions

        最好的加密货币钱包是什么？
        Answers: 0 Views: 2 Rating: 0
        最值得投资的加密货币是什么？
        Answers: 0 Views: 7 Rating: 0
        加密货币交易中的“滑点”是什么意思？
        Answers: 0 Views: 7 Rating: 0
        加密货币中的“Staking”（质押行为）是什么意思？
        Answers: 0 Views: 8 Rating: 0
        加密货币中的“Stake”是什么意思？
        Answers: 0 Views: 9 Rating: 0
        qq22
        Answers: 0 Views: 9 Rating: 0
        什么是加密货币钱包？
        Answers: 0 Views: 8 Rating: 0
        质押加密货币值得吗？
        Answers: 0 Views: 10 Rating: 0
        > More questions...
        564736
        questions
        779616
        answers
        928486
        users